What is the primary purpose of a flue damper?

The primary purpose of a flue damper is to restrict airflow when the fireplace is not in use. This feature is essential for several reasons. By closing the flue damper, it prevents heat from escaping the home through the chimney, enhancing energy efficiency. It also keeps cold air from entering the living space when the fireplace is not operational, as an open flue can create drafts and lead to increased heating costs.

Furthermore, closing the damper when the fireplace is not in use helps prevent animals, debris, and weather elements from entering the chimney, which is crucial for maintaining a safe and functional chimney system. This function ensures that when the fireplace is needed, the flue can be opened to allow smoke and gases to vent efficiently. While regulating temperature, enhancing smoke flow, and cooling the chimney may be auxiliary benefits in certain situations, the fundamental role of a flue damper is to control airflow and protect the home when the fireplace is not in operation.